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Question about valves running hours

I'm new to the tubes world and when I bought my amplifier the seller told me not to run it for more than 8 hours, letting it for rest a couple hours before the next listening session. I wasn't told why, but now I got curious and I want to know more about it. 
What's the reason for this limitation? What can we damage and why?
128x128migueca

Showing 2 responses by czarivey

czarivey
5,740 posts
 
For tube electronics, I completely agree. Tubes must rest. On/off cycle of tubes is relatively easy and lasts 5...10min. 
The advice of seller is RIGHT ON and should be followed.
Tubes run hot and dry out capacitors. 
Turn off tube electronics if you don't plan to listen to it for more than couple of hours
Turn off tube electronics before you go to bed and before living dwelling!!
This will assure longer life of your equipment.
czarivey
5,740 posts
 
" On/off cycling during listening sessions is ridiculous".
It in fact is unless the listening session is way too long as mentioned 8 or more hours. Give yourself AND amp rest for at least few hours.
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